diff --git a/cmake/thirdparty/get_legion.cmake b/cmake/thirdparty/get_legion.cmake
index 71ce33fb1e..7a0ee42d33 100644
--- a/cmake/thirdparty/get_legion.cmake
+++ b/cmake/thirdparty/get_legion.cmake
@@ -173,6 +173,7 @@ function(find_or_configure_legion)
     message(VERBOSE "legate.core: Legion git_branch: ${git_branch}")
     message(VERBOSE "legate.core: Legion exclude_from_all: ${exclude_from_all}")
 
+    set(ENV{CUDA_BIN_PATH} "${CUDAToolkit_LIBRARY_ROOT}")
     rapids_cpm_find(Legion ${version} ${FIND_PKG_ARGS}
         CPM_ARGS
           ${legion_cpm_git_args}
@@ -200,6 +201,10 @@ function(find_or_configure_legion)
     )
   endif()
 
+  if (NOT CUDA_TOOLKIT_ROOT_DIR STREQUAL CUDAToolkit_LIBRARY_ROOT)
+    message(FATAL_ERROR "Legion CUDA root ${CUDA_TOOLKIT_ROOT_DIR} differs from Legate's CUDA root ${CUDAToolkit_LIBRARY_ROOT}")
+  endif()
+
   set(Legion_USE_CUDA ${Legion_USE_CUDA} PARENT_SCOPE)
   set(Legion_USE_OpenMP ${Legion_USE_OpenMP} PARENT_SCOPE)
   set(Legion_USE_Python ${Legion_USE_Python} PARENT_SCOPE)
diff --git a/install.py b/install.py
index 25bf4e7992..6cb842ee50 100755
--- a/install.py
+++ b/install.py
@@ -23,6 +23,7 @@
 import subprocess
 import sys
 from distutils import sysconfig
+from pathlib import Path
 
 # Flush output on newlines
 sys.stdout.reconfigure(line_buffering=True)
@@ -344,6 +345,17 @@ def validate_path(path):
     ucx_dir = validate_path(ucx_dir)
     thrust_dir = validate_path(thrust_dir)
 
+    if cuda_dir is not None:
+        nvcc_matches = list(Path(cuda_dir).rglob("nvcc"))
+        if len(nvcc_matches) == 0:
+            sys.exit(f"No valid nvcc found in root {cuda_dir}")
+        elif len(nvcc_matches) > 1:
+            sys.exit(f"Multiple nvcc found in root {cuda_dir}: {nvcc_matches}")
+
+        cuda_compiler = nvcc_matches[0]
+    else:
+        cuda_compiler = None
+
     if verbose:
         print("legate_core_dir: ", legate_core_dir)
         print("cuda_dir: ", cuda_dir)
@@ -454,7 +466,13 @@ def validate_path(path):
     if conduit:
         cmake_flags += [f"-DGASNet_CONDUIT={conduit}"]
     if cuda_dir:
-        cmake_flags += [f"-DCUDAToolkit_ROOT={cuda_dir}"]
+        cmake_flags += [
+            f"-DCUDAToolkit_ROOT={cuda_dir}",
+        ]
+    if cuda_compiler:
+        cmake_flags += [
+            f"-DCMAKE_CUDA_COMPILER={cuda_compiler}",
+        ]
     if thrust_dir:
         cmake_flags += [f"-DThrust_ROOT={thrust_dir}"]
     if legion_dir: